Sensor Image utilities

[benjamin-heasly]

Currently, BatchRender() produces multi-spectral data, and MakeMontage() produces sRGB images. It would be useful to produce other kinds of image, based on other color matching functions.

Two utilities would be nice:

sensorImage = MultispectralToSensorImage(multi-spectral-data, data-S, matching-function, matching-S) Would be similar to the existing MultispectralToSRGB(). It would take multi-spectral data and the corresponding spectral sampling, "S". It would also take a color matching function in the form of a matrix, and its associated sampling, "S". An alternate form could take the string name of a Psychtoolbox color matching function .mat file, and dig out the color matching matrix and "S".

sensorImage would be a matrix with size determined by the input data and matching function.

outFiles = MakeSensorImages(inFiles, matchingFunctions, hints) Would be somewhat similar to the existing MakeMontage(). It would take a list of multi-spectral data files, as produced by BatchRender. It would also take a list of matching functions to pass to MultispectralToSensorImage(). Each list element could be a matrix-S pair, or the name of a Psychtoolbox .mat file. It should also take hints, so it knows where two write new files.

Each outFile name could resemble an inFile, plus a suffix to indicate which matching function was used.

[benjamin-heasly]

Note that we need to "multiply in" to Psychtoolbox functions, since renderers use units of Power per Unit Wavelength, and Psychtoolbox expects Power per Wavelength Band.

[benjamin-heasly]

b0b25b71bc70249c47545daee0145575e9a4c5a7 contains new MultispectralToSensorImage(). It's used in MakeMontage() and MultispectralToSRGB(). It works in preliminary testing.

[benjamin-heasly]

e24d6966ff70eb549b25114696bcdfb763fba346 contains new MakeSensorImages(). MakeMaterialSphere.m demonstrates usage of MakeSensorImages().